Pipe section having bonded composite barrier layer

Patent metadata

Field	Value
Publication number	US-9353893-B2
Application number	US-201313862886-A
Country	US
Kind code	B2
Filing date	Apr 15, 2013
Priority date	Apr 13, 2012
Publication date	May 31, 2016
Grant date	May 31, 2016

Abstract

Pipe sections and methods for forming pipe sections are disclosed. A pipe section includes a hollow body formed from a metal material, the hollow body having an inner surface and an outer surface, the inner surface defining an interior. The pipe section further includes a barrier layer surrounding and bonded to the hollow body, the barrier layer having an inner surface and an outer surface. The barrier layer is formed from a continuous fiber reinforced thermoplastic material. Such pipe sections may be lightweight and flexible while exhibiting improved strength characteristics.

First claim

What is claimed is:

1. A pipe section, comprising:
a hollow body formed from a metal material, the hollow body having an inner surface and an outer surface, the inner surface defining an interior;
a barrier layer surrounding and bonded to the hollow body, the barrier layer having an inner surface and an outer surface, the barrier layer formed from a continuous fiber reinforced thermoplastic material, wherein the thermoplastic material is a polyarylene sulfide composition comprising a polyarylene sulfide and a crosslinked impact modifier.

2. The pipe section of claim 1 , wherein the barrier layer is a tape.

3. The pipe section of claim 2 , wherein the tape is wrapped generally helically around the hollow body with respect to a longitudinal axis of the hollow body.

4. The pipe section of claim 1 , wherein the continuous fibers are generally unidirectional.

5. The pipe section of claim 1 , wherein the hollow body is formed from a steel.

6. The pipe section of claim 1 , wherein the continuous fibers are carbon fibers.

7. The pipe section of claim 1 , wherein the continuous fibers are glass fibers.

8. The pipe section of claim 1 , wherein the continuous fibers are aramid fibers.

9. The pipe section of claim 1 , wherein the hollow body is formed from a plurality of interlocking strips.

10. The pipe section of claim 1 , wherein the barrier layer is a plurality of barrier layers.

11. A method for forming a pipe section, the method comprising:
forming a tape, comprising:
flowing a thermoplastic resin through a manifold assembly of a die, the manifold assembly comprising a plurality of branched runners;
coating at least one fiber roving with the resin; and
traversing the coated roving through an impregnation zone of the die to impregnate the roving with the resin;

surrounding a hollow body with a barrier layer such that the barrier layer is in contact with an outer surface of the hollow body, the hollow body formed from a metal material, and wherein the barrier layer is the tape formed from a continuous fiber reinforced thermoplastic material;
heating the barrier layer to a consolidation temperature; and
consolidating the hollow body and the barrier layer.

12. The method of claim 11 , wherein the surrounding step comprises wrapping the barrier layer generally helically around the hollow body with respect to a longitudinal axis of the hollow body.

13. The method of claim 11 , wherein the thermoplastic material is a polyarylene sulfide composition comprising a polyarylene sulfide and a crosslinked impact modifier.

14. A method for forming a pipe section, the method comprising:
surrounding a hollow body with a barrier layer such that the barrier layer is in contact with an outer surface of the hollow body, the hollow body formed from a metal material, the barrier layer formed from a continuous fiber reinforced thermoplastic material, wherein the thermoplastic material is a polyarylene sulfide composition comprising a polyarylene sulfide and a crosslinked impact modifier;
heating the barrier layer to a consolidation temperature; and
consolidating the hollow body and the barrier layer.

15. The method of claim 14 , wherein the surrounding step comprises wrapping the barrier layer generally helically around the hollow body with respect to a longitudinal axis of the hollow body.

16. The method of claim 14 , wherein the barrier layer is a tape formed from the continuous fiber reinforced thermoplastic material.

Assignees

• Ticona Llc

Inventors

• Ruby Michael A
• Eastep David W
• Johnson Aaron H
• Luo Rong
• Grenci Joseph J
• Mcgrady Christopher
• Zhao Xinyu

Classifications

• B32B1/08

  Tubular products · CPC title

• F27B14/00

  Crucible or pot furnaces · CPC title

• B29C2948/92876

  Feeding, melting, plasticising or pumping zones, e.g. the melt itself · CPC title

• Y10T428/1397

  Single layer [continuous layer] · CPC title

• C08L2203/18

  used for pipes · CPC title